//
// Created by 束庆乐 on 2024/12/29.
//
#include "iostream"
using namespace std;

int main011(){
    int a = 10;
    a+=2;
    cout << a << endl;
    a-=2;
    cout << a << endl;
    a*=2;
    cout << a << endl;
    a/=2;
    cout << a << endl;

    return 0;
}